RO pre-filters should be changed after how long?

Reverse osmosis (RO) systems utilize pre-filters to protect the membrane from contaminants that can cause fouling and decrease efficiency. Regularly changing these pre-filters is critical for maintaining optimal performance and prolonging the lifespan of the RO system.

The recommendation to change RO pre-filters monthly is based on the typical usage and accumulation of pollutants like sediment, chlorine, and other particulates that can clog the filters. If pre-filters are not changed frequently enough, they may become saturated and less effective, leading to reduced water quality and increased pressure on the RO membrane.

While some less demanding applications or specific system designs may allow longer intervals, a monthly change aligns with standard practices to ensure that pre-filters perform effectively and maintain water quality. This frequency helps to avoid significant deterioration of filtration efficiency and prevents potential damage to the sensitive membrane downstream.